chore: rename cameleer3 to cameleer

Rename Java packages from com.cameleer3 to com.cameleer, module
directories from cameleer3-* to cameleer-*, and all references
throughout workflows, Dockerfiles, docs, migrations, and pom.xml.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/superpowers/plans/2026-04-02-composable-sidebar-migration.md

@@ -171,7 +171,7 @@ export function writeCollapsed(key: string, value: boolean): void {
 
 - [ ] **Step 2: Verify it compiles**
 
-Run: `cd C:/Users/Hendrik/Documents/projects/cameleer3-server/ui && npx tsc --project tsconfig.app.json --noEmit`
+Run: `cd C:/Users/Hendrik/Documents/projects/cameleer-server/ui && npx tsc --project tsconfig.app.json --noEmit`
 Expected: No errors.
 
 - [ ] **Step 3: Commit**
@@ -479,7 +479,7 @@ Note: The Admin section renders in two positions — at the top when `isAdminPag
 
 - [ ] **Step 5: Verify it compiles**
 
-Run: `cd C:/Users/Hendrik/Documents/projects/cameleer3-server/ui && npx tsc --project tsconfig.app.json --noEmit`
+Run: `cd C:/Users/Hendrik/Documents/projects/cameleer-server/ui && npx tsc --project tsconfig.app.json --noEmit`
 Expected: No errors. If `StatusDot` is not exported from the DS, check the exact export name with `grep -r "StatusDot" ui/node_modules/@cameleer/design-system/dist/index.es.d.ts`.
 
 - [ ] **Step 6: Commit**
@@ -516,7 +516,7 @@ export default function AdminLayout() {
 
 - [ ] **Step 2: Verify it compiles**
 
-Run: `cd C:/Users/Hendrik/Documents/projects/cameleer3-server/ui && npx tsc --project tsconfig.app.json --noEmit`
+Run: `cd C:/Users/Hendrik/Documents/projects/cameleer-server/ui && npx tsc --project tsconfig.app.json --noEmit`
 Expected: No errors.
 
 - [ ] **Step 3: Commit**